/**************************************
 *             COPYRIGHT              *
 *                                    *
 *  Author   : Sony Darmawan          *
 *  NIM      : 41815110084            *
 *  Kampus   : Universitas Mercubuana *
 *  Jurusan  : Sistem Informasi (S1)  *
 *  Fakultas : Ilmu Komputer          *
 *                                    *
 **************************************/

#include <iostream>
#include <conio.h>
#include <string.h>

using namespace std;

int z[] = {}; // array buat nyimpen data yg diinput,

class StackOverflow {
	public:
		int stackVal, rangeVal, top;
		void showValue( void ); // nampilin array yg udah diinput
		void setStackValue( int val ); // nyimpen nilai
		void deleteStackValue( void ); // hapus nilai yg terakhir diinput
		void setRangeStack( int r ); // untuk limit/batas array yg akan diinput.
		void truncateValue( void ); // hapus semua nilai yg ada diarray.
		int getRangeStack( void ); // mengembalikan nilai dari setStackValue
		int getStackValue( void ); // mengembalikan nilai dari setRangeStack
		void setRangeToNull( void ); // batas menjadi null atau 0
};

void StackOverflow::setRangeStack( int r ) {
	rangeVal = r;
}

int StackOverflow::getRangeStack(void) {
	return rangeVal;
}

void StackOverflow::setStackValue( int val ) {
	stackVal = val;
}

int StackOverflow::getStackValue( void ) {
	if( top == getRangeStack() - 1 ) {
		cout << "Warning : Stack Overflow!\n";
	}
	else {
        top++;
		z[top] = stackVal;
	}
}
void StackOverflow::deleteStackValue( void ) {
	if( top == -1 ) {
		cout << "Error : No value on this stack...\n";
	}
	else {
		cout << "Array [" << top << "]: ";
		cout << z[top] << " has been removed";
		top--;
	}
}
void StackOverflow::truncateValue( void ) {
	if( top == -1 ) {
		cout << "Error : No value on this stack...\n";
	}
	else {
		for(int i = 0; i <= top; i++) {
			cout << "Deleteing array [" << i << "]";
			cout << ": ";
			cout << z[i] << "\n";
		}
		top = -1;
		cout << "All values has been removed.....\n";
	}
}
void StackOverflow::showValue( void ) {
	if( top == -1 ) {
		cout << "Error : No value on this stack...";
	}
	else {
		for(int i = 0; i <= top; i++) {
			cout << "Array of [" << i << "]";
			cout << ": ";
			cout << z[i] << " \n";
		}
	}
	cout << "\n";
}
void StackOverflow::setRangeToNull(void) {
    rangeVal = 0;
    cout << "\n";
}

/*void StackOverflow::countStackLength( void ) {
	cout << "Length of array : " << z[0];
}*/

int main() {
	StackOverflow stackoverflow;
	int options, val, ran;
	string username;
	string password;
	stackoverflow.rangeVal = 0;
	stackoverflow.top = -1;

	logout:
	cout << "\t--||-----------------------------------------------||--\n";
	cout << "\t--||             STACK OVERFLOW v1.0             --||--\n";
	cout << "\t--||            Authors: Sony Darmawan           --||--\n";
	cout << "\t--||             Date : 28 March 2016            --||--\n";
	cout << "\t--||-----------------------------------------------||--\n";

	login:
	cout << "\nLogin username: "; cin >> username;
	cout << "Password: "; cin >> password;

	if( username == "admin01" && password == "123321" ) {
         system("cls");
         goto menu_opt;
    }
    else {
         cout << "\nLogin failed\n";
         goto login;
    }

	menu_opt:
	while( options != 8 ) {
		cout << "----------------------------------------------------\n\n";
		cout << "Range stack: " << stackoverflow.getRangeStack() << endl << endl;
		cout << "1. Display Value(s)\n";
		cout << "2. Set Range\n";
		cout << "3. Add Value(s)\n";
		cout << "4. Delete Value(s)\n";
		cout << "5. Truncate Value(s)\n";
		cout << "6. Logout\n";
		cout << "7. Clear Range\n";
		cout << "8. Exit\n\n";

		cout << "Please enter an options: "; cin >> options;
		system("cls");
		if( options == 1 ) {
			cout << "1. Display Value(s): \n\n";
			stackoverflow.showValue();
		}
		if( options == 2 ) {
			cout << "2. Set Range of Stack: \n\n";
			ran_null:
			cout << "Enter range: "; cin >> ran;
			if( ran == 0 ) {
				cout << "Range cannot be null\n\n";
				goto ran_null;
			}
			else if( ran < stackoverflow.getRangeStack() ) {
				cout << "Range should be higher than before.\n\n";
				goto ran_null;
			}
			else {
				stackoverflow.setRangeStack(ran);
				stackoverflow.getRangeStack();
			}
		}
		if( options == 3 ) {
			cout << "3. Add Value(s): \n\n";
			if( stackoverflow.getRangeStack() == 0 ) {
				cout << "Warning: Please set range to add value!\n\n";
			}
			else {
				if( stackoverflow.top == stackoverflow.getRangeStack() - 1 ) {
					cout << "Warning: Stack Overflow!\n\n";
				}
				else {
					cout << "Enter a value: "; cin >> val;
					stackoverflow.setStackValue(val);
					stackoverflow.getStackValue();
					cout << "\n";
				}
			}
		}
		if( options == 4 ) {
			cout << "4. Delete Stack: \n\n";
			stackoverflow.deleteStackValue();
			cout << "\n";
		}
		if( options == 5 ) {
			cout << "5. Truncate Value(s):\n\n";
			stackoverflow.truncateValue();
		}
		if( options == 6 ) { goto logout; }
		if( options == 7 ) {
            cout << "7. Clear Range\n\n";
            if( stackoverflow.top != -1 ) {
                cout << "Stack is not empty.\nPlease delete all values to set range to null.\n";
            }
            else {
                 stackoverflow.setRangeToNull();
            }
        }
		if( options == 8 ) {
			cout << "\n\n\n\n\n";
			cout << "\t\t\t  --- EXITING PROGRAM ---\n\n";
			cout << "\t\t\tPress any key to continue...\n\n";
			cout << "\t\t\t  --- EXITING PROGRAM ---\n\n";
		}
	}
	getch();
}